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| 油松平均针叶龄与松毛虫蛹质量的数学关系 | |
| 引用本文： | 齐淑艳,张凤来,王振飞,朱丽艳.油松平均针叶龄与松毛虫蛹质量的数学关系[J].防护林科技,2007(Z1):31-32. |
| 作者姓名： | 齐淑艳 张凤来 王振飞 朱丽艳 |
| 作者单位： | 1. 辽宁省朝阳县六家子林场,辽宁,朝阳,122625 2. 朝阳县东五家子林场 3. 朝阳县林木种苗站 |
| 摘 要： | 探讨了松毛虫蛹质量与针叶危害程度之间的数学规律,得出直线方程为:y=0.946 589+0.464 559x。揭示出松毛虫蛹质量与针叶危害程度之间的内在联系,即松针龄越小,松毛虫蛹质量降低,产卵量减少;反之蛹质量增加,产卵量增大。 |
| 关 键 词： | 松毛虫 蛹质量 平均针叶龄 |
| 文章编号： | 1005-5215(2007)S0-0031-02 |
| 修稿时间： | 2007年1月23日 |
Mathematic Relation of Mean Needle Age of Pinus tabulaeformis and Pupal Mass of Pine Caterpillar |
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| QI Shu-yan,ZHANG Feng-lai,WANG Zhen-fei,ZHU Li-yan.Mathematic Relation of Mean Needle Age of Pinus tabulaeformis and Pupal Mass of Pine Caterpillar[J].Protection Forest Science and Technology,2007(Z1):31-32. | |
| Authors: | QI Shu-yan ZHANG Feng-lai WANG Zhen-fei ZHU Li-yan |
| Abstract: | We discussed maths law of pupal mass and damage of needle which can be expressed by the equation: y=0.946 589 0.464 559x.The internal relationship between pupal mass of pine caterpillar and harming degree of needle leaf are revealed.The younger the pine needle age,the lower the pupal mass and fecundity of pine caterpillar;The older the pine needle age,the higher the pupal mass and fecundity of pine caterpillar. |
| Keywords: | pine caterpillar pupal mass mean needle age |
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